/* Renato's Gas Piping — site.css
   Palette: logo black + white, blue-flame accent. */
:root{
  --black:#111417; --ink:#1D232A; --muted:#5B6672;
  --white:#FFFFFF; --paper:#F4F6F8; --line:#DCE2E8;
  --flame:#1E7FE0; --flame-deep:#0B4FA8; --flame-glow:#8FD0FF; --flame-core:#DDF3FF;
  --ember:#F0A322;
  --serif:"Source Serif 4",Georgia,"Times New Roman",serif;
  --sans:"Barlow","Helvetica Neue",Arial,sans-serif;
  --max:1160px; --r:10px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{animation:none!important;transition:none!important}}
body{margin:0;font-family:var(--sans);font-size:17px;line-height:1.6;color:var(--ink);background:var(--white)}
img{max-width:100%;height:auto;display:block}
a{color:var(--flame-deep)}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid var(--flame);outline-offset:2px}
h1,h2,h3,h4{font-family:var(--serif);font-weight:700;line-height:1.15;margin:0 0 .5em;color:var(--black);letter-spacing:-.01em}
h1{font-size:clamp(2.2rem,5.2vw,3.7rem)}
h2{font-size:clamp(1.7rem,3.4vw,2.5rem)}
h3{font-size:1.35rem}
h4{font-size:1.1rem}
p{margin:0 0 1em}
.wrap{max-width:var(--max);margin:0 auto;padding:0 22px}
.lead{font-size:1.2rem;color:var(--muted);max-width:60ch}
.kicker{font-family:var(--serif);font-style:italic;color:var(--flame-deep);font-size:1.1rem;margin:0 0 .4em}
section{padding:72px 0}
section.tight{padding:48px 0}
.paper{background:var(--paper)}
.dark{background:var(--black);color:#DCE2E8}
.dark h1,.dark h2,.dark h3{color:#fff}
.dark .lead{color:#AEB8C2}
.dark a{color:var(--flame-glow)}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:.5em;padding:14px 24px;border-radius:6px;font-weight:600;font-size:1.02rem;text-decoration:none;border:2px solid transparent;cursor:pointer;font-family:var(--sans);line-height:1.1;transition:background .15s,color .15s,border-color .15s}
.btn-flame{background:var(--flame);color:#fff}
.btn-flame:hover{background:var(--flame-deep)}
.btn-ghost{background:transparent;color:var(--black);border-color:var(--black)}
.btn-ghost:hover{background:var(--black);color:#fff}
.dark .btn-ghost{color:#fff;border-color:#fff}
.dark .btn-ghost:hover{background:#fff;color:var(--black)}
.btn-lg{padding:17px 30px;font-size:1.1rem}
.actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}

/* Top strip */
.strip{background:var(--flame-deep);color:#fff;font-size:.93rem;padding:8px 0}
.strip .wrap{display:flex;flex-wrap:wrap;gap:6px 24px;align-items:center;justify-content:space-between}
.strip a{color:#fff;font-weight:600;text-decoration:none}
.strip a:hover{text-decoration:underline}
.pilot{display:inline-flex;align-items:center;gap:8px}
.pilot i{width:10px;height:14px;border-radius:50% 50% 50% 50%/60% 60% 40% 40%;background:radial-gradient(circle at 50% 80%,var(--flame-core),var(--flame-glow) 45%,var(--flame) 75%,transparent 78%);animation:pilot 1.8s ease-in-out infinite;transform-origin:50% 100%}
@keyframes pilot{0%,100%{transform:scaleY(1)}50%{transform:scaleY(1.18) translateY(-1px)}}

/* Header */
header.site{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--line)}
header.site .wrap{display:flex;align-items:center;gap:26px;min-height:92px}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--black);font-family:var(--serif)}
.brand img{height:72px;width:auto;flex:none}
.brand b{font-weight:700;font-size:1.15rem;letter-spacing:.01em;white-space:nowrap}
@media (max-width:480px){.brand img{height:54px}}
nav.main{margin-left:auto;display:flex;align-items:center;gap:4px}
nav.main a{color:var(--ink);text-decoration:none;font-weight:500;padding:10px 12px;border-radius:6px;white-space:nowrap}
nav.main a:hover{background:var(--paper);color:var(--black)}
nav.main a.on{color:var(--flame-deep);font-weight:600}
nav.main .btn{margin-left:8px;padding:11px 18px}
.menu-btn{display:none;margin-left:auto;background:none;border:2px solid var(--black);border-radius:6px;padding:8px 12px;font:600 1rem var(--sans);cursor:pointer}
@media (max-width:900px){
  nav.main{display:none;position:absolute;left:0;right:0;top:100%;background:#fff;border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch;padding:12px 22px 18px;gap:2px}
  nav.main.open{display:flex}
  nav.main a{padding:12px 8px;font-size:1.05rem}
  nav.main .btn{margin:10px 0 0;justify-content:center}
  .menu-btn{display:inline-block}
}

/* Logo SVG (inline) */
.logo-oval{fill:var(--black)}
.logo-oval-ring{fill:none;stroke:#fff;stroke-width:6}
.logo-word{font-family:var(--serif);font-weight:700;fill:#fff}
.logo-sub{font-family:var(--serif);font-weight:600;fill:var(--black)}
.dark .logo-sub,.hero .logo-sub,.page-hero .logo-sub,footer.site .logo-sub{fill:#fff}
.dark .logo-oval{fill:#000}

/* Hero */
.hero{position:relative;overflow:hidden;background:var(--black);color:#fff;padding:0}
.hero .wrap{display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:center;min-height:560px;padding-top:56px;padding-bottom:56px}
.hero h1{color:#fff;margin-bottom:.4em}
.hero .lead{color:#C6CFD8;font-size:1.22rem}
.hero .since{font-family:var(--serif);font-style:italic;color:var(--flame-glow);font-size:1.15rem;margin-bottom:14px}
.hero .btn-ghost{color:#fff;border-color:#fff}
.hero .btn-ghost:hover{background:#fff;color:var(--black)}
.burner{position:relative;justify-self:center;width:min(100%,420px);aspect-ratio:1}
.burner .ring{position:absolute;inset:0}
.burner .logo-big{position:absolute;inset:22%;display:flex;align-items:center;justify-content:center}
.hero-word{text-align:center;font-family:var(--serif);text-shadow:0 4px 24px rgba(0,0,0,.7)}.hero-word span{display:block;font-size:clamp(2rem,4.6vw,3.4rem);font-weight:700;color:#fff;line-height:1;letter-spacing:-.01em}.hero-word small{display:block;font-family:var(--sans);font-weight:800;letter-spacing:.32em;font-size:.95rem;text-transform:uppercase;color:var(--flame-glow);margin-top:10px;padding-left:.32em}
.flame{position:absolute;left:50%;top:50%;width:18px;height:62px;margin:-31px 0 0 -9px;transform-origin:50% 50%;border-radius:50% 50% 50% 50%/70% 70% 30% 30%;background:radial-gradient(ellipse at 50% 85%,var(--flame-core) 0,var(--flame-glow) 30%,var(--flame) 62%,rgba(30,127,224,0) 76%);filter:blur(.4px);animation:lick 1.3s ease-in-out infinite;opacity:.95}
@keyframes lick{0%,100%{transform:rotate(var(--a)) translateY(-168px) scaleY(1)}50%{transform:rotate(var(--a)) translateY(-168px) scaleY(1.22) scaleX(.9)}}
.burner .glow{position:absolute;inset:8%;border-radius:50%;box-shadow:0 0 90px 30px rgba(30,127,224,.28),inset 0 0 60px rgba(30,127,224,.25)}
.burner .rim{position:absolute;inset:14%;border-radius:50%;border:8px solid #2A3038;box-shadow:inset 0 0 0 3px #0c0f12,0 0 0 2px #0c0f12}
.burner .hub{position:absolute;inset:26%;border-radius:50%;background:#0c0f12;box-shadow:inset 0 0 0 2px #2A3038}
@media (max-width:900px){.hero .wrap{grid-template-columns:1fr;min-height:0}.burner{width:min(78vw,340px);margin:10px auto 0}.flame{width:14px;height:48px;margin:-24px 0 0 -7px}@keyframes lick{0%,100%{transform:rotate(var(--a)) translateY(-136px) scaleY(1)}50%{transform:rotate(var(--a)) translateY(-136px) scaleY(1.22) scaleX(.9)}}}

/* Page hero (inner pages) */
.page-hero{background:var(--black);color:#fff;padding:60px 0 54px}
.page-hero .wrap{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center}
.page-hero h1{color:#fff}
.page-hero .lead{color:#C6CFD8}
.page-hero .btn-ghost{color:#fff;border-color:#fff}.page-hero .btn-ghost:hover{background:#fff;color:var(--black)}
.page-hero img{border-radius:var(--r);justify-self:end;max-height:340px;object-fit:cover;width:100%}
.page-hero .cut{background:radial-gradient(circle at 50% 60%,rgba(30,127,224,.35),transparent 65%);display:flex;align-items:center;justify-content:center;padding:20px}
.page-hero .cut img{max-height:300px;width:auto;border-radius:0}
@media (max-width:900px){.page-hero .wrap{grid-template-columns:1fr}.page-hero img{justify-self:start;max-height:260px}}

/* Facts row */
.facts{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;background:#fff}
.facts div{padding:22px 24px;border-left:1px solid var(--line)}
.facts div:first-child{border-left:0}
.facts strong{display:block;font-family:var(--serif);font-size:2rem;color:var(--black);line-height:1.1}
.facts span{color:var(--muted)}
@media (max-width:800px){.facts{grid-template-columns:1fr 1fr}.facts div:nth-child(3){border-left:0}.facts div:nth-child(n+3){border-top:1px solid var(--line)}}

/* Services */
.services{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.svc{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:26px 26px 24px;display:flex;flex-direction:column;position:relative;text-decoration:none;color:var(--ink)}
.svc:hover{border-color:var(--flame)}
.svc .pic{height:150px;display:flex;align-items:flex-end;justify-content:center;margin-bottom:18px;background:radial-gradient(ellipse at 50% 100%,rgba(30,127,224,.22),transparent 65%)}
.svc .pic img{max-height:140px;width:auto}
.svc h3{margin-bottom:.35em}
.svc p{color:var(--muted);margin-bottom:1.1em;flex:1}
.svc .more{color:var(--flame-deep);font-weight:600}
@media (max-width:900px){.services{grid-template-columns:1fr 1fr}}
@media (max-width:600px){.services{grid-template-columns:1fr}}

/* Two-column feature */
.split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.split img{border-radius:var(--r)}
@media (max-width:900px){.split{grid-template-columns:1fr}}

/* Steps (a real sequence) */
.steps{counter-reset:s;display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.steps li{list-style:none;counter-increment:s;background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:24px}
.steps li::before{content:counter(s);display:inline-flex;width:38px;height:38px;border-radius:50%;background:var(--black);color:#fff;font-family:var(--serif);font-weight:700;align-items:center;justify-content:center;margin-bottom:12px}
.steps h4{margin-bottom:.3em}
.steps p{color:var(--muted);margin:0}
.steps{padding:0;margin:0}
@media (max-width:900px){.steps{grid-template-columns:1fr 1fr}}
@media (max-width:560px){.steps{grid-template-columns:1fr}}

/* Reasons */
.reasons{display:grid;grid-template-columns:repeat(3,1fr);gap:28px 36px}
.reasons h4{margin-bottom:.25em;display:flex;align-items:center;gap:10px}
.reasons h4::before{content:"";width:12px;height:18px;border-radius:50% 50% 50% 50%/60% 60% 40% 40%;background:radial-gradient(circle at 50% 80%,var(--flame-core),var(--flame) 70%);flex:none}
.reasons p{color:var(--muted);margin:0}
@media (max-width:900px){.reasons{grid-template-columns:1fr 1fr}}
@media (max-width:560px){.reasons{grid-template-columns:1fr}}

/* FAQ */
.faq{max-width:820px}
.faq details{border-top:1px solid var(--line);padding:6px 0}
.faq details:last-child{border-bottom:1px solid var(--line)}
.faq summary{cursor:pointer;font-family:var(--serif);font-weight:700;font-size:1.15rem;padding:14px 36px 14px 0;position:relative;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:4px;top:12px;font-size:1.5rem;color:var(--flame-deep);font-family:var(--sans);font-weight:400}
.faq details[open] summary::after{content:"–"}
.faq details p{color:var(--muted);margin:0 0 14px;max-width:70ch}

/* Q&A cards (service pages) */
.qa{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.qa div{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:24px}
.qa h3{font-size:1.2rem}
.qa p{color:var(--muted);margin:0}
@media (max-width:700px){.qa{grid-template-columns:1fr}}

/* Family strip */
.family{display:grid;grid-template-columns:1fr;gap:18px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:26px 30px}
.family .logos{display:flex;flex-wrap:wrap;gap:10px}
.family .logos span{border:1px solid var(--line);border-radius:6px;padding:8px 12px;font-weight:600;font-size:.95rem;color:var(--ink);background:var(--paper)}
@media (max-width:800px){.family{grid-template-columns:1fr}}

/* CTA band */
.cta-band{background:var(--flame-deep);color:#fff;padding:56px 0}
.cta-band .wrap{display:grid;grid-template-columns:1fr auto;gap:30px;align-items:center}
.cta-band h2{color:#fff;margin-bottom:.2em}
.cta-band p{color:#D6E8FB;margin:0}
.cta-band .btn-flame{background:#fff;color:var(--flame-deep)}
.cta-band .btn-flame:hover{background:var(--flame-core)}
.cta-band .badge{width:130px;height:130px;justify-self:end;border-radius:50%;box-shadow:0 0 0 4px rgba(255,255,255,.25)}
@media (max-width:800px){.cta-band .wrap{grid-template-columns:1fr}.cta-band .badge{justify-self:start}}

/* Contact + form */
.contact{display:grid;grid-template-columns:.85fr 1.15fr;gap:48px;align-items:start}
.cards{display:grid;gap:14px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:18px 20px}
.card small{display:block;color:var(--muted);font-size:.9rem}
.card a{font-family:var(--serif);font-size:1.25rem;font-weight:700;color:var(--black);text-decoration:none}
.card a:hover{color:var(--flame-deep)}
.hours{display:grid;grid-template-columns:1fr auto;gap:6px 20px;margin:0}
.hours dt{color:var(--muted)}.hours dd{margin:0;font-weight:600;white-space:nowrap}
form.quote{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:28px}
form.quote h3{margin-bottom:.2em}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
@media (max-width:560px){.grid2{grid-template-columns:1fr}}
label{display:block;font-weight:600;font-size:.95rem;margin:14px 0 6px}
label .req{color:#C8102E}
input[type=text],input[type=email],input[type=tel],select,textarea{width:100%;padding:12px 13px;border:1px solid #B9C3CD;border-radius:6px;font:inherit;color:var(--ink);background:#fff}
textarea{min-height:110px;resize:vertical}
input[type=file]{font:inherit;font-size:.95rem}
.hp{position:absolute;left:-9999px;opacity:0;height:0;overflow:hidden}
fieldset{border:0;padding:0;margin:0}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chips label{margin:0;font-weight:500;cursor:pointer}
.chips input{position:absolute;opacity:0;width:0;height:0}
.chips span{display:inline-block;padding:9px 14px;border:1px solid #B9C3CD;border-radius:999px;background:#fff}
.chips input:checked+span{background:var(--black);color:#fff;border-color:var(--black)}
.chips input:focus-visible+span{outline:3px solid var(--flame);outline-offset:2px}
.qual{border-top:1px solid var(--line);margin-top:22px;padding-top:18px}
.qual summary{cursor:pointer;font-weight:600;color:var(--flame-deep);list-style:none}
.qual summary::-webkit-details-marker{display:none}
.qual summary::before{content:"+ ";}
.qual[open] summary::before{content:"– ";}
.note{background:var(--paper);border-radius:6px;padding:12px 14px;font-size:.95rem;color:var(--muted);margin-top:14px}
.msg{display:none;padding:14px 16px;border-radius:6px;margin-bottom:16px;font-weight:600}
.msg.ok{display:block;background:#E6F6EC;color:#166534}
.msg.err{display:block;background:#FDECEC;color:#991B1B}
.qc-warn{display:none;color:#991B1B;font-weight:600;margin-top:8px}
@media (max-width:900px){.contact{grid-template-columns:1fr}}

/* Footer */
footer.site{background:var(--black);color:#AEB8C2;padding:56px 0 28px;font-size:.98rem}
footer.site .cols{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px}
footer.site h4{color:#fff;font-family:var(--sans);font-size:1rem;margin-bottom:.8em}
footer.site a{color:#DCE2E8;text-decoration:none;display:block;margin-bottom:8px}
footer.site a:hover{color:var(--flame-glow)}
footer.site .brand img{height:150px}
footer.site .fine{border-top:1px solid #2A3038;margin-top:36px;padding-top:20px;display:flex;flex-wrap:wrap;gap:10px 28px;justify-content:space-between;font-size:.9rem;color:#8994A0}
footer.site .fine a{display:inline;margin:0;color:#AEB8C2}
.counter{font-variant-numeric:tabular-nums;color:#fff;font-weight:600}
@media (max-width:900px){footer.site .cols{grid-template-columns:1fr 1fr}}
@media (max-width:560px){footer.site .cols{grid-template-columns:1fr}}

/* Utilities */
.mt0{margin-top:0}.mb0{margin-bottom:0}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}